Android基础小技术点：Android ListView设置背景图片及分割线、周边距

电玩女神 2024-02-17 16:17 21阅读 0赞

以Android小机器人作为ListView的背景图片，增加ListView的周边距离，分割线透明，效果如图所示：

![Center][]

主要是通过布局文件实现。给出代码实现activity\_main.xml：

测试的主Activity MainActivity.java：

package zhangphil.demo;
    
    import android.app.Activity;
    import android.content.Context;
    import android.os.Bundle;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.ArrayAdapter;
    import android.widget.ListView;
    import android.widget.TextView;
    
    public class MainActivity extends Activity {
    
    	@Override
    	protected void onCreate(Bundle savedInstanceState) {
    		super.onCreate(savedInstanceState);
    		setContentView(R.layout.activity_main);
    
    		ListView list = (ListView) findViewById(android.R.id.list);
    
    		String[] data = new String[100];
    		for (int i = 0; i < data.length; i++) {
    			data[i] = "数据" + i;
    		}
    
    		list.setAdapter(new MyArrayAdapter(this, android.R.layout.simple_list_item_1, data));
    	}
    
    	private class MyArrayAdapter extends ArrayAdapter<String> {
    
    		private String[] data;
    		private LayoutInflater layoutInflater;
    		private int resource;
    
    		public MyArrayAdapter(Context context, int resource, String[] data) {
    			super(context, resource);
    			this.data = data;
    			this.resource = resource;
    			this.layoutInflater = LayoutInflater.from(context);
    		}
    
    		@Override
    		public View getView(int position, View convertView, ViewGroup parent) {
    			if (convertView == null)
    				convertView = layoutInflater.inflate(resource, null);
    
    			TextView text = (TextView) convertView.findViewById(android.R.id.text1);
    			text.setText(getItem(position));
    
    			convertView.setBackgroundColor(0xff80deea);
    			// convertView.getBackground().setAlpha(128);
    
    			return convertView;
    		}
    
    		@Override
    		public String getItem(int pos) {
    			return data[pos];
    		}
    
    		@Override
    		public int getCount() {
    			return data.length;
    		}
    	}
    }

[Center]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/30/931b2d3b35fb42bfa3552083e52422b1.png